package com.example.springboot.service;

import com.example.springboot.entity.City;

import java.util.List;

/**
 * Created by tang on 2017/12/4.
 */
public interface CityService {

    City findByCityName(String cityName);

    List<City> findAll();

    void updateCity(City city);

    void addCity(City city);
}
